Fillet of beef with porcini mushroom gravy, mashed potatoes and stir-fried vegetables – Food & Home

Ingredients

• <h3>Mashed potatoes</h3>
• 1kg potatoes, peeled and sliced
• 50g butter
• 500ml (2 cups) cold milk
• a pinch of nutmeg
• salt and freshly ground black pepper, to taste
• a handful of fresh flat-leaf parsley, chopped
• 1,6kg fillet of beef, at room temperature and trimmed
• 60ml (¼ cup) soy sauce
• freshly ground black pepper, to taste
• 200g butter
• 60ml (¼ cup) oil
• <h3>Gravy</h3>
• 150g porcini mushrooms, sliced
• 15ml (1 tbsp) beef stock granules
• 15ml (1 tbsp) cake flour
• ½ onion, chopped
• <h3>Stir-fry vegetables</h3>
• 5ml (1 tsp) olive oil
• 500g French beans, topped and tailed
• 250g black olives, pitted and sliced
• 1 red pepper, seeded and finely sliced
• Chinese five-spice, to taste
• lemon juice, to taste